阅读说明：本技术 一种无汞干电池 (Mercury-free dry battery ) 是由 雷铭深 于 2018-06-09 设计创作，主要内容包括：本发明公开了一种无汞干电池,其原料浆液按重量百分数如下：氯化锌7.2～7.6%,氯化铵15～17%,面、淀粉25～28%,聚丙烯酰胺0.04～0.07%,盐酸0.02～0.03%,三氯化铋0.03～0.08%。通过对氯化汞化学材料的替换,减少干电池废弃后对环境造成的污染和对生产操作人员带来的人身安全影响；利用铋盐等化学材料均匀粘附在锌筒内壁,减少对锌的不均匀腐蚀,有效地阻止了锌筒的腐蚀快速化学反应,延长了锌筒的使用时效和穿孔、漏液问题的出现,对用电器具的安全性有了更进一步的保障作用。(The invention discloses a mercury-free dry battery, which comprises the following raw material slurry in percentage by weight: 7.2 to 7.6 percent of zinc chloride, 15 to 17 percent of ammonium chloride, 25 to 28 percent of flour, starch, 0.04 to 0.07 percent of polyacrylamide, 0.02 to 0.03 percent of hydrochloric acid and 0.03 to 0.08 percent of bismuth trichloride. By replacing the chemical materials of the mercuric chloride, the pollution to the environment and the personal safety influence on production operators caused by the discarded dry batteries are reduced; the chemical materials such as bismuth salt and the like are uniformly adhered to the inner wall of the zinc cylinder, so that the non-uniform corrosion to zinc is reduced, the quick chemical reaction of corrosion to the zinc cylinder is effectively prevented, the use aging of the zinc cylinder and the problems of perforation and liquid leakage are prolonged, and the safety of electric appliances is further guaranteed.)

1. The mercury-free dry battery is characterized in that the raw material slurry comprises the following components in percentage by weight: 7.2 to 7.6 percent of zinc chloride, 15 to 17 percent of ammonium chloride, 25 to 28 percent of flour, starch, 0.04 to 0.07 percent of polyacrylamide, 0.02 to 0.03 percent of hydrochloric acid and 0.03 to 0.08 percent of bismuth trichloride.

2. A mercury-free dry cell battery as defined in claim 1, wherein: the raw material slurry of the mercury-free dry battery also comprises deionized water.

3. A process for producing a mercury-free dry battery according to claim 1, comprising the steps of: s1, manufacturing a battery cell: fully mixing and stirring manganese powder, acetylene black, zinc chloride, ammonium chloride and water, forming and processing a battery cell by using a forming machine, and then adhering square paper on the surface;

s2, preparing slurry: mixing 7.2-7.6% of zinc chloride, 15-17% of ammonium chloride, 25-28% of flour, starch, 0.04-0.07% of polyacrylamide, 0.02-0.03% of hydrochloric acid and 0.03-0.08% of bismuth trichloride according to the weight percentage, adding deionized water to prepare a slurry, filling the slurry into a zinc shell, and pouring a layer of wax liquid on the upper end face of the cell;

s3, sealing: after the wax liquid is solidified, placing a paper ring on the upper end surface of the wax liquid, pouring a sealing agent which is asphalt, pouring the sealing agent into the paper ring, leveling the sealing agent, and adding two paper rings;

s4, forming: and adding a positive electrode cap, grinding the bottom, adding a hole cap and a rubber ring, adding a color tube and an iron bottom, sleeving a layer of thermoplastic sleeve, performing thermoplastic molding, and putting into a box.

4. A process for producing a mercury-free dry battery as claimed in claim 3, wherein: in the S1, firstly, a layer of insulating pad is placed at the bottom of the zinc shell, and the battery cell is fixed in the middle of the zinc shell.

5. A process for producing a mercury-free dry battery as claimed in claim 3, wherein: and S2, after the wax liquid is added, cleaning one end of the carbon rod, and preventing stains from falling into the zinc shell during cleaning.

Technical Field

The invention belongs to the field of dry batteries, and particularly relates to a mercury-free dry battery. Meanwhile, the invention also relates to a production process of the mercury-free dry battery.

Background

Most of dry batteries used in daily life are zinc-manganese batteries, and are mainly applied to household appliances and electronic equipment such as flashlights, radio recorders, water heaters and the like.

Basic construction and operating principle of dry cell: the dry cell is mainly composed of zinc cylinder, carbon rod inserted in positive electrode powder and installed in the zinc cylinder, manganese dioxide, acetylene black, etc. the dry cell is mainly composed of ammonium chloride and zinc chloride as electrolytes, and mercuric chloride as corrosion inhibitor, and the electrolyte is filled between the zinc cylinder and the positive electrode powder. The dry battery is also provided with an insulating rubber cover, a hole is formed in the insulating rubber cover for the extending end of the carbon rod to pass through, a metal cover and a metal bottom plate are respectively arranged at the extending end of the carbon rod and the bottom of the zinc cylinder to respectively form a positive electrode and a negative electrode of the dry battery, and the metal cover and the metal bottom plate are fixed with the zinc cylinder shell through the insulating rubber cover.

The zinc cylinder of the dry battery generates chemical reaction through electrolyte, and mercuric chloride and zinc react to generate zinc-mercury alloy, so that the corrosion speed of the zinc cylinder is reduced, liquid leakage is avoided by perforation, and normal use of dry battery electric appliances such as household appliances and electronic equipment is better protected.

As mercuric chloride is a corrosive and toxic chemical substance, the mercuric chloride is slightly improper to operate in the production process and easily harms human bodies of production workers. In actual use, dry batteries are discarded when the dry batteries are used until the electrical performance does not reach the standard, and mercury chloride in the electrolyte can cause pollution to ground surfaces, land, water and the like.

In view of this, the use of mercuric chloride is reduced by replacing other materials, so that the working safety of production personnel is achieved, and the discarded dry battery does not pollute the environment, which is a technical problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The present invention is directed to a mercury-free dry battery to solve the above problems of the related art.

In order to achieve the purpose, the invention provides the following technical scheme:

the mercury-free dry battery comprises the following raw material slurry in percentage by weight: 7.2 to 7.6 percent of zinc chloride, 15 to 17 percent of ammonium chloride, 25 to 28 percent of flour, starch, 0.04 to 0.07 percent of polyacrylamide, 0.02 to 0.03 percent of hydrochloric acid and 0.03 to 0.08 percent of bismuth trichloride.

Preferably, the raw material slurry of the mercury-free dry battery further comprises deionized water.

The invention also provides a production process of the mercury-free dry battery, which comprises the following steps: s1, manufacturing a battery cell: fully mixing and stirring manganese powder, acetylene black, zinc chloride, ammonium chloride and water, forming and processing a battery cell by using a forming machine, and then adhering square paper on the surface;

s2, preparing slurry: mixing 7.2-7.6% of zinc chloride, 15-17% of ammonium chloride, 25-28% of flour, starch, 0.04-0.07% of polyacrylamide, 0.02-0.03% of hydrochloric acid and 0.03-0.08% of bismuth trichloride according to the weight percentage, adding deionized water to prepare a slurry, filling the slurry into a zinc shell, and pouring a layer of wax liquid on the upper end face of the cell;

s3, sealing: after the wax liquid is solidified, placing a paper ring on the upper end surface of the wax liquid, pouring the sealing agent, flattening, and then adding two paper rings;

s4, forming and processing: and adding a positive electrode cap, grinding the bottom, adding a hole cap and a rubber ring, adding a color tube and an iron bottom, sleeving a layer of thermoplastic sleeve, and performing thermoplastic molding and then putting into a box.

Preferably, in S1, an insulating pad is first placed at the bottom of the zinc shell, and the battery cell is fixed in the middle of the zinc shell.

Preferably, after the wax liquid is added in the S2, one end of the carbon rod is cleaned, and stains are prevented from falling into the zinc shell during cleaning.

Compared with the prior art, the invention has the beneficial effects that: by replacing the chemical materials of the mercuric chloride, the pollution to the environment and the personal safety influence on production operators caused by the discarded dry batteries are reduced; the chemical materials such as bismuth salt and the like are uniformly adhered to the inner wall of the zinc cylinder, so that the uneven corrosion to zinc is reduced, the quick chemical reaction of corrosion of the zinc cylinder is effectively prevented, the service aging of the zinc cylinder and the problems of perforation and liquid leakage are prolonged, and the safety of an electric appliance is further guaranteed.

Drawings

FIG. 1 is a schematic flow chart of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.